This one has me a little baffled.  Cross-compiling for VAX on my i386
system with the following command:

./build.sh -m vax -V CHECKFLIST_FLAGS="-e -m" -j4 -R /usr/snapshot release

[...]
--- progressbar.o ---
--- progress.o ---
#   compile  progress/progress.o
/u0/work/netbsd-current/src/obj/tooldir.NetBSD-1.6ZG-i386/bin/vax--netbsdelf-gcc -O2  -Wall -Wstrict-prototypes -Wmissing-prototypes -Wpointer-arith -Wno-sign-compare -Wno-traditional -Wno-uninitialized  -Werror   -I/u0/work/netbsd-current/src/usr.bin/ftp -DSTANDALONE_PROGRESS  -nostdinc -isystem /u0/work/netbsd-current/src/obj/destdir.vax/usr/include  -c    /u0/work/netbsd-current/src/usr.bin/progress/progress.c
--- progressbar.o ---
#   compile  progress/progressbar.o
/u0/work/netbsd-current/src/obj/tooldir.NetBSD-1.6ZG-i386/bin/vax--netbsdelf-gcc -O2  -Wall -Wstrict-prototypes -Wmissing-prototypes -Wpointer-arith -Wno-sign-compare -Wno-traditional -Wno-uninitialized  -Werror   -I/u0/work/netbsd-current/src/usr.bin/ftp -DSTANDALONE_PROGRESS  -nostdinc -isystem /u0/work/netbsd-current/src/obj/destdir.vax/usr/include  -c    /u0/work/netbsd-current/src/usr.bin/ftp/progressbar.c
--- progress ---
#      link  progress/progress
/u0/work/netbsd-current/src/obj/tooldir.NetBSD-1.6ZG-i386/bin/vax--netbsdelf-gcc    -o progress -nostdlib  -Wl,-rpath-link,/u0/work/netbsd-current/src/obj/destdir.vax/lib:/u0/work/netbsd-current/src/obj/destdir.vax/usr/lib  -L/u0/work/netbsd-current/src/obj/destdir.vax/lib /u0/work/netbsd-current/src/obj/destdir.vax/usr/lib/crt0.o /u0/work/netbsd-current/src/obj/destdir.vax/usr/lib/crti.o /u0/work/netbsd-current/src/obj/destdir.vax/usr/lib/crtbegin.o progress.o progressbar.o  -L/u0/work/netbsd-current/src/obj/destdir.vax/usr/lib -L/u0/work/netbsd-current/src/obj/destdir.vax/usr/lib  -lgcc -lc -lgcc /u0/work/netbsd-current/src/obj/destdir.vax/usr/lib/crtend.o /u0/work/netbsd-current/src/obj/destdir.vax/usr/lib/crtn.o
1 error

nbmake: stopped in /u0/work/netbsd-current/src/usr.bin

*** Failed target:  dependall-usr.bin
*** Failed command: targ=dependall;dir=usr.bin; case "$dir" in /*) echo "$targ ===> $dir"; cd "$dir"; /u0/work/netbsd-current/src/obj/tooldir.NetBSD-1.6ZG-i386/bin/nbmake "_THISDIR_=$dir/" $targ; ;; *) echo "$targ ===> $dir"; cd "/u0/work/netbsd-current/src/$dir"; /u0/work/netbsd-current/src/obj/tooldir.NetBSD-1.6ZG-i386/bin/nbmake "_THISDIR_=$dir/" $targ; ;; esac
*** Error code 2

Stop.
nbmake: stopped in /u0/work/netbsd-current/src
*** [do-build] Error code 1
1 error

nbmake: stopped in /u0/work/netbsd-current/src

*** Failed target:  build
*** Failed command: (cd /u0/work/netbsd-current/src && /u0/work/netbsd-current/src/obj/tooldir.NetBSD-1.6ZG-i386/bin/nbmake do-build)
*** Error code 2

Stop.
nbmake: stopped in /u0/work/netbsd-current/src
*** [release] Error code 1
1 error

nbmake: stopped in /u0/work/netbsd-current/src

ERROR: Failed to make release
*** BUILD ABORTED ***